<template>
  <div>
    <!-- 面包屑导航区域 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/welcome' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>用户管理</el-breadcrumb-item>
      <el-breadcrumb-item>用户列表</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- 卡片视图区域 -->
    <el-card class="box-card">
      <!-- 搜索与添加区域 -->
      <el-row :gutter="20">
        <el-col :span="8">
          <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable @clear="getUserList">
            <el-button slot="append" icon="el-icon-search" @click="getUserList"></el-button>
          </el-input>
        </el-col>
        <el-col :span="4">
          <el-button type="primary" @click="addDialogVisible=true">添加用户</el-button>
        </el-col>
      </el-row>
      <!-- 用户列表区域 -->
      <el-table :data="userList" border stripe>
        <el-table-column type="index" label="编号"></el-table-column>
        <el-table-column label="姓名" prop="username"></el-table-column>
        <el-table-column label="邮箱" prop="email"></el-table-column>
        <el-table-column label="电话" prop="mobile"></el-table-column>
        <el-table-column label="角色" prop="role_name"></el-table-column>
        <el-table-column label="状态">
          <!-- slot-scope 作用域插槽接收这一行的数据 -->
          <template slot-scope="scope">
            <el-switch v-model="scope.row.mg_state" @change="userStateChanged(scope.row)"></el-switch>
          </template>
        </el-table-column>
        <el-table-column label="操作" width="180px">
          <template slot-scope="scope">
            <!-- 编辑按钮 -->
            <el-button
              type="primary"
              icon="el-icon-edit"
              size="mini"
              @click="editUser(scope.row.id)"
            ></el-button>
            <!-- 删除按钮 -->
            <el-button
              type="danger"
              @click="removeUsersById(scope.row.id)"
              icon="el-icon-delete"
              size="mini"
            ></el-button>
            <!-- 分配角色按钮 -->
            <el-tooltip effect="dark" content="分配角色" placement="top" :enterable="false">
              <el-button
                type="warning"
                icon="el-icon-setting"
                size="mini"
                @click="setRoles(scope.row)"
              ></el-button>
            </el-tooltip>
          </template>
        </el-table-column>
      </el-table>
      <!-- 分页区域 -->
      <el-pagination
        @size-change="handleSizeChange"
        @current-change="handleCurrentChange"
        :current-page="queryInfo.pagenum"
        :page-sizes="[1, 2, 5, 10]"
        :page-size="queryInfo.pagesize"
        layout="total, sizes, prev, pager, next, jumper"
        :total="total"
      ></el-pagination>
    </el-card>
    <!-- 添加用户的对话框 -->
    <el-dialog title="添加用户" :visible.sync="addDialogVisible" width="50%" @close="addDialogClosed">
      <!-- 内容主体区 -->
      <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="70px">
        <!-- 用户名 -->
        <el-form-item label="用户名" prop="username">
          <el-input v-model="addForm.username"></el-input>
        </el-form-item>
        <!-- 密码 -->
        <el-form-item label="密码" prop="password">
          <el-input v-model="addForm.password" type="password"></el-input>
        </el-form-item>
        <!-- 邮箱 -->
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="addForm.email"></el-input>
        </el-form-item>
        <!-- 手机号 -->
        <el-form-item label="手机号" prop="mobile">
          <el-input v-model="addForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <!-- 底部按钮区域 -->
      <span slot="footer" class="dialog-footer">
        <el-button @click="addDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="addUser">确 定</el-button>
      </span>
    </el-dialog>
    <!-- 编辑用户的对话框 -->
    <el-dialog title="编辑" @close="editDialogClosed" :visible.sync="editDialogVisible" width="50%">
      <!-- 编辑用户的表单 -->
      <el-form ref="editFormRef" :rules="editFormRules" :model="editForm" label-width="70px">
        <!-- 用户名 -->
        <el-form-item label="用户名" prop="username">
          <el-input v-model="editForm.username" disabled></el-input>
        </el-form-item>
        <!-- 邮箱 -->
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="editForm.email"></el-input>
        </el-form-item>
        <!-- 手机号 -->
        <el-form-item label="手机" prop="mobile">
          <el-input v-model="editForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="editDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="editUserInfo">确 定</el-button>
      </span>
    </el-dialog>
    <!-- 分配角色的对话框 -->
    <el-dialog
      title="分配角色"
      :visible.sync="setRolesdialogVisible"
      width="50%"
      @close="setRolesdialogClosed"
    >
      <div>
        <p>当前的用户:{{userinfo.username}}</p>
        <p>当前的角色:{{userinfo.role_name}}</p>
        <p>
          分配新角色:
          <el-select v-model="selectedRoleId" placeholder="请选择">
            <el-option
              v-for="item in rolesList"
              :key="item.id"
              :label="item.roleName"
              :value="item.id"
            ></el-option>
          </el-select>
        </p>
      </div>
      <span slot="footer" class="dialog-footer">
        <el-button @click="setRolesdialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="saveRoleInfo">确 定</el-button>
      </span>
    </el-dialog>
  </div>
</template>
<script>
export default {
  data() {
    // 验证邮箱的规则
    var checkEmail = (rule, value, cb) => {
      const regEmail = /^\w+@\w+(\.\w+)+$/
      if (regEmail.test(value)) {
        return cb()
      }
      // 返回一个错误提示
      cb(new Error('请输入合法的邮箱'))
    }
    // 验证手机号码的规则
    var checkMobile = (rule, value, cb) => {
      const regMobile = /^1[34578]\d{9}$/
      if (regMobile.test(value)) {
        return cb()
      }
      // 返回一个错误提示
      cb(new Error('请输入合法的手机号码'))
    }
    return {
      // 获取用户列表的参数对象
      queryInfo: {
        query: '',
        // 当前的页数s
        pagenum: 1,
        // 当前每页显示的页数
        pagesize: 2
      },
      userList: [],
      total: 0,
      //   控制添加用户对话框的显示与隐藏
      addDialogVisible: false,
      //   添加用户的表单数据
      addForm: {
        username: '',
        password: '',
        email: '',
        mobile: ''
      },
      //   添加表单数据的验证规则
      addFormRules: {
        username: [
          { required: true, message: '请输入用户名', trigger: 'blur' },
          { min: 3, max: 5, message: '长度在 3 到 5 个字符', trigger: 'blur' }
        ],
        password: [
          { required: true, message: '请输入密码', trigger: 'blur' },
          { min: 6, max: 15, message: '长度在 6 到 15 个字符', trigger: 'blur' }
        ],
        email: [
          { required: true, message: '请输入邮箱', trigger: 'blur' },
          { validator: checkEmail, trigger: 'blur' }
        ],
        mobile: [
          { required: true, message: '请输入手机号', trigger: 'blur' },
          { validator: checkMobile, trigger: 'blur' }
        ]
      },
      // 编辑对话框的显示隐藏
      editDialogVisible: false,
      // 查询的用户表单对象
      editForm: {},
      // 编辑用户的验证规则
      editFormRules: {
        email: [
          { required: true, message: '请输入邮箱', trigger: 'blur' },
          { validator: checkEmail, trigger: 'blur' }
        ],
        mobile: [
          { required: true, message: '请输入手机号', trigger: 'blur' },
          { validator: checkMobile, trigger: 'blur' }
        ]
      },
      // 控制分配角色的显示隐藏
      setRolesdialogVisible: false,
      // 角色信息
      userinfo: {},
      // 所有角色列表数据
      rolesList: [],
      // 当前选中的角色id
      selectedRoleId: ''
    }
  },
  methods: {
    async getUserList() {
      const { data: res } = await this.$http.get('users', {
        params: this.queryInfo
      })
      if (res.meta.status !== 200) {
        return this.$message.error('获取用户列表失败!')
      }
      this.userList = res.data.users
      this.total = res.data.total
      console.log(this.userList, this.total)
    },
    // 监听pagesize值改变时间
    handleSizeChange(newSize) {
      this.queryInfo.pagesize = newSize
      this.getUserList()
    },
    // 监听页码值改变时间
    handleCurrentChange(newPage) {
      this.queryInfo.pagenum = newPage
      this.getUserList()
    },
    // 监听switch开关状态
    async userStateChanged(userinfo) {
      console.log(userinfo)
      const { data: res } = await this.$http.put(
        `users/${userinfo.id}/state/${userinfo.mg_state}`
      )
      if (res.meta.status !== 200) {
        userinfo.mg_state = !userinfo.mg_state
        return this.$message.error('更新用户状态失败!')
      }
      this.$message.success('更新用户状态成功!')
    },
    // 监听对话框关闭时的回调函数
    addDialogClosed() {
      // 那到表单引用 调用resetFields方法
      this.$refs.addFormRef.resetFields()
    },
    // 发起添加用户的请求
    addUser() {
      // 发情请求的时候再预校验一下
      this.$refs.addFormRef.validate(async valid => {
        // 校验失败 给出提示
        if (!valid) return this.$message.error('验证失败！')
        // 校验通过可以发起网络请求
        const { data: res } = await this.$http.post('users', this.addForm)
        // 返回的状态码不等于201 提示创建失败
        if (res.meta.status !== 201) return this.$message.error('用户创建失败!')
        // 创建成功 给出提示
        this.$message.success('用户创建成功!')
        // 关闭对话框
        this.addDialogVisible = false
        // 重新渲染用户列表
        this.getUserList()
      })
    },
    // 点击编辑按钮事件
    async editUser(id) {
      // 发送请求获取用户信息
      const { data: res } = await this.$http.get('users/' + id)
      if (res.meta.status !== 200) {
        return this.$message.error('查询用户信息失败！')
      }
      this.editForm = res.data
      console.log(this.editForm)
      this.editDialogVisible = true
    },
    //  点击编辑对话框取消按钮
    editDialogClosed() {
      // 调用引用对象方法完成重置
      this.$refs.editFormRef.resetFields()
    },
    // 点击确定按钮发送请求
    editUserInfo() {
      this.$refs.editFormRef.validate(async valid => {
        if (!valid) return
        const { data: res } = await this.$http.put(
          'users/' + this.editForm.id,
          {
            email: this.editForm.email,
            mobile: this.editForm.mobile
          }
        )
        // 请求失败 提示信息
        if (res.meta.status !== 200) {
          return this.$message.error('更新用户信息失败!')
        }

        // 请求成功 关闭对话框  加载列表 提示成功
        this.editDialogVisible = false
        this.getUserList()
        this.$message.success('更新用户信息成功!')
      })
    },
    //  根据ID删除用户信息
    async removeUsersById(id) {
      const confirmResult = await this.$confirm(
        '此操作将永久删除该用户, 是否继续?',
        '提示',
        {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }
      ).catch(err => err)
      // 点击取消 给出提示
      if (confirmResult !== 'confirm') {
        return this.$message.info('已取消删除!')
      }
      // 点击确定 发送请求删除用户
      const { data: res } = await this.$http.delete('users/' + id)
      // 失败给出提示
      if (res.meta.status !== 200) {
        return this.$message.error('删除用户信息失败!')
      }
      // 成功给出提示
      this.$message.success('删除用户成功!')
      // 重新渲染用户列表
      this.getUserList()
    },
    // 点击分配角色按钮
    async setRoles(userinfo) {
      this.userinfo = userinfo
      // 在展示对话框之前  获取所有角色列表
      const { data: res } = await this.$http.get('roles')
      this.rolesList = res.data
      this.setRolesdialogVisible = true
    },
    // 确定分配角色按钮
    async saveRoleInfo() {
      if (!this.selectedRoleId) {
        this.$message.error('请选择要分配的角色!')
      }
      const { data: res } = await this.$http.put(
        `users/${this.userinfo.id}/role`,
        {
          rid: this.selectedRoleId
        }
      )
      if (res.meta.status !== 200) {
        return this.$message.error('更新角色信息失败!')
      }
      this.$message.success('更新用户信息成功!')
      this.getUserList()
      this.setRolesdialogVisible = false
    },
    // 分配角色对话框关闭事件
    setRolesdialogClosed() {
      this.userinfo = {}
      this.selectedRoleId = ''
    }
  },
  created() {
    this.getUserList()
  }
}
</script>
<style lang="less" scoped>
.el-breadcrumb {
  margin-bottom: 15px;
  font-size: 12px;
}
.el-card {
  box-shadow: 0 1px 1px rgba(0, 0, 0, 0.15);
}
.el-table {
  margin-top: 15px;
  font-size: 12px;
}
.el-pagination {
  margin-top: 15px;
}
</style>
